کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1805371 | 1024681 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Magnetization reversal mechanisms in hybrid resin-bonded Nd–Fe–B magnets Magnetization reversal mechanisms in hybrid resin-bonded Nd–Fe–B magnets](/preview/png/1805371.png)
The magnetic properties of isotropic epoxy resin-bonded magnets prepared by mixing a hard magnetic powder made from melt quenched Nd–Fe–Co–B ribbons and a soft magnetic iron powder have been examined. The magnetization reversal processes and the magnetic parameters have been studied by the measurement of the virgin magnetization curves, the major and minor hysteresis loops and sets of recoil curves. From these recoil curves the field dependence of the reversible and irreversible magnetization components during the magnetization and demagnetization processes has been derived. The remanence relationship was used to study the nature of magnetic interaction between the grains. A study of interaction domains was conducted using optical microscopy. Groups of domains, each over several grains, were observed. It was found that the reversal process in the samples investigated involves the rotation of magnetization vectors in the iron powder grains and pinning of domain walls at the MQP-B grain boundaries.
Journal: Journal of Magnetism and Magnetic Materials - Volume 306, Issue 2, November 2006, Pages 302–308